Color

#290bd0

#290bd0
hex#290bd0
rgbrgb(41, 11, 208)
hslhsl(249, 90%, 43%)
oklchoklch(0.405 0.257 270.9)
Closest name: Busty Blue (#3300cc)Relative luminance 0.0526

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#b3d00b

#0b50d0 · #8b0bd0

#d0290b · #0bd029

Split-complementary

Open in tool →

#d08b0b · #50d00b

#d00b50 · #b3d00b · #0bd08b

Contrast

#290bd0 as textRatioAAAA largeAAAFix
Aaon white
10.23:1passpasspassPasses AAA — no fix needed.
Aaon black
2.05:1failfailfail
  • AA: use #725af6 as the text (4.51:1)
  • AAA: use #9786f9 as the text (7.09:1)
  • AA: or shift the background to #adadad (4.56:1)
  • AAA: or shift the background to #d6d6d6 (7.04:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #290bd0 as the background.

Brands using this color

No public brand in the corpus uses this exact color yet. Extract a brand to add one.

Fonts for this mood

#290bd0 reads as cool, vivid, technical. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #290bd0
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — generate_palette, check_contrast, analyze_color — read-only, no key. Every palette it proposes comes with a /palettes/new/… link: open it, lock what you like, paste the link back.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #290bd0 and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/290bd0-a79cc4-dfae4e-271f2d-e9ecf1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md